Alamosa County Post Offices

505 3rd St
Alamosa, Colorado 81101

11701 State Highway 17
Hooper, Colorado 81136

9260 4th Ave
Mosca, Colorado 81146

Alamosa County

There are 3 US Post Offices in Alamosa County serving a total of 15,467 residents equating to 5,156 residents per post office. It's estimated that approximately 24,687 packages are handled across the 3 county post offices annually. Alamosa County is one of the 64 counties of the U.S. state of Colorado. As of the 2010 census, the population was 15,445. The county seat is Alamosa. The county name is the Spanish language word for a \"grove of cottonwood trees.\""